<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<%-- 	1.输出
	<c:out value="Hello" />
	EL代替---->${ "Hello"}
	<br /> 2.value的值作为属性存储到scope中。
	<c:set var="loggedIn" scope="session" value="${true}" />
	<br /> 3.从scope中删除名字为var的属性。
	<c:remove var="loggedOut" scope="session" />
	<br /> 4.捕获异常
	<c:catch var="e"><%=100 / 0%></c:catch>
	${e}
	<br /> --%>
	<c:if test=${13<1}>Welcome!</c:if>
</body>
</html>